/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package com.oracle.truffle.api;

import com.oracle.truffle.api.nodes.RootNode;

/**
 * Represents the target of a call. Do not subclass {@link CallTarget} directly but implement
 * {@link RootNode} instead and create a {@link CallTarget target} using {@link Truffle}.
 * {@link Truffle#getRuntime() getRuntime()}.{@link TruffleRuntime#createCallTarget(RootNode)
 * createCallTarget(rootNode)}.
 *
 * @see RootNode
 * @since 0.8 or earlier
 */
public interface CallTarget {

    /**
     * Calls this target as a root method.
     *
     * @param arguments passed arguments as an object array
     * @return the return result of the call
     * @since 0.8 or earlier
     */
    Object call(Object... arguments);
}
